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JavaWeb (crazy God says Java) Java Web 1. Basic concepts 1.1 Preface web development: Web is the meaning of web page development, which means that we can get resources from the web page www.baidu.com com Static web html css The data provided to everyone will never change Dynamic web Taobao, almost all websites are dynamic ...

As its name suggests, the navigation guard provided by Vue router is mainly used to guard navigation by jumping or canceling. There are many opportunities to implant in the routing navigation process: Overall,Exclusive to a single route,Or component level. Global guard Global pre guard router beforeEachGlobal resolution guard router befor ...

Express - based on node JS platform web application development framework - Express Chinese document | express Chinese networkhttps://www.expressjs.com.cn/ Express is based on Node The web development framework developed by JS is a Node JS module; Since it is based on Node JS, the premise of using express is that the computer must have installe ...

js based array API The method of adding * in the following table will not change the original array. attributedescribe*concat()Join two or more arrays and return the result*join()Put all the elements of the array into a string. Elements are separated by the specified separatorpop()Deletes and returns the last element of the arraypush()Adds on ...

When we get the upper point and fully test the upper point, the goal of the test is to get the confirmed information. It can display the database information we want, all table information, all field information, and even the permission of the background manager. In this article, we will solve this problem Use the upper point to explode the li ...

Vue core of Vue family bucket (I) 1 Introduction to Vue 1.1 what is Vue? Vue is a progressive JavaScript framework for building user interfaces. Author: you Yuxi Official website: https://cn.vuejs.org/index.html 1.2 characteristics of Vue 1. Adopt component mode to improve code reuse rate and make code better maintained. 2 declarati ...

1, Reference setSelectionRange() reference Selection MDN Range MDN 2, Problem description Business requirements: if the camera hair has illegal parking, it needs to send a text message to the relevant car owners Development task: relevant SMS templates need to be edited in advance, such as time, license plate number, owner's nam ...

catalogue 1, What are built-in objects 2, Query document 2.1 MDN 2.2 how to learn methods in objects 3, Math object 3.1 Math overview 3.1.1 case exercise - encapsulating your own Math object 3.1.2 absolute value of math and three rounding methods 3.2 random number method (random) 3.2.1 case exercise - get a random number between two n ...

1. Server side basic concepts 1.1 IP address Unique identification of the device in the Internet. IP is the abbreviation of Internet Protocol Address, which represents the Internet Protocol Address. 1.2 domain name Because the IP address is difficult to remember, the concept of domain name came into being. The so-called domain name is t ...

1, Regular expression 1. Regular expression overview It is usually used to check whether a string satisfies a certain format in a judgment statement Regular expressions are composed of ordinary characters and metacharacters Ordinary characters include upper and lower case letters, numbers, punctuation marks and some other symbols Metachara ...